Lines Matching +full:wait +full:- +full:queue

1 // SPDX-License-Identifier: GPL-2.0-or-later
5  * (C) Copyright 2013-2014 Hewlett-Packard Development Company, L.P.
18  * queued_read_lock_slowpath - acquire read lock of a queued rwlock
31 		 * without waiting in the queue.  in queued_read_lock_slowpath()
33 		atomic_cond_read_acquire(&lock->cnts, !(VAL & _QW_LOCKED));  in queued_read_lock_slowpath()
36 	atomic_sub(_QR_BIAS, &lock->cnts);  in queued_read_lock_slowpath()
41 	 * Put the reader into the wait queue  in queued_read_lock_slowpath()
43 	arch_spin_lock(&lock->wait_lock);  in queued_read_lock_slowpath()
44 	atomic_add(_QR_BIAS, &lock->cnts);  in queued_read_lock_slowpath()
51 	atomic_cond_read_acquire(&lock->cnts, !(VAL & _QW_LOCKED));  in queued_read_lock_slowpath()
54 	 * Signal the next one in queue to become queue head  in queued_read_lock_slowpath()
56 	arch_spin_unlock(&lock->wait_lock);  in queued_read_lock_slowpath()
63  * queued_write_lock_slowpath - acquire write lock of a queued rwlock
72 	/* Put the writer into the wait queue */  in queued_write_lock_slowpath()
73 	arch_spin_lock(&lock->wait_lock);  in queued_write_lock_slowpath()
76 	if (!(cnts = atomic_read(&lock->cnts)) &&  in queued_write_lock_slowpath()
77 	    atomic_try_cmpxchg_acquire(&lock->cnts, &cnts, _QW_LOCKED))  in queued_write_lock_slowpath()
81 	atomic_or(_QW_WAITING, &lock->cnts);  in queued_write_lock_slowpath()
85 		cnts = atomic_cond_read_relaxed(&lock->cnts, VAL == _QW_WAITING);  in queued_write_lock_slowpath()
86 	} while (!atomic_try_cmpxchg_acquire(&lock->cnts, &cnts, _QW_LOCKED));  in queued_write_lock_slowpath()
88 	arch_spin_unlock(&lock->wait_lock);  in queued_write_lock_slowpath()